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Squashed 'GravatarCache/' content from commit f46d345
git-subtree-dir: GravatarCache git-subtree-split: f46d3455744f092b4b9d2cab764324669b4ccf95
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‎GravatarCache.php

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<?php
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/**
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* Gravatar 头像缓存插件
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*
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* @package GravatarCache
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* @author Byends
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* @version 2.0.2
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* @link http://www.byends.com
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*/
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class GravatarCache implements Typecho_Plugin_Interface
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{
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/**
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* 激活插件方法,如果激活失败,直接抛出异常
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*
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* @access public
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* @return void
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* @throws Typecho_Plugin_Exception
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*/
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public static function activate()
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{
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Typecho_Plugin::factory('Widget_Abstract_Comments')->gravatar = array('GravatarCache', 'getGravatar');
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}
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/**
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* 禁用插件方法,如果禁用失败,直接抛出异常
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*
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* @static
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* @access public
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* @return void
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* @throws Typecho_Plugin_Exception
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*/
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public static function deactivate()
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{
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self::deleteFile();
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}
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/**
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* 获取插件配置面板
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*
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* @access public
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* @param Typecho_Widget_Helper_Form $form 配置面板
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* @return void
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*/
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public static function config(Typecho_Widget_Helper_Form $form)
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{
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$timeCache = new Typecho_Widget_Helper_Form_Element_Text('timeCache', NULL, '1209600', _t('缓存时间'),_t('缓存时间，默认 14天 = 1209600 秒'));
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$timeCache->input->setAttribute('class', 'mini');
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$form->addInput($timeCache->addRule('required', _t('必须填写缓存时间'))->addRule('isInteger', _t('缓存时间必须是整数')));
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$dir = new Typecho_Widget_Helper_Form_Element_Text('dir', null, '/usr/uploads/avatarCache/', _t('存放路径'), _t('缓存头像存放的路径，请确保第一个目录可写！'));
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$form->addInput($dir->addRule('required', _t('必须填写缓存目录')));
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$delCache= new Typecho_Widget_Helper_Form_Element_Radio( 'delCache', array( 'delY' => '是', 'delN' => '否' ), 'delY', '删除缓存',_t('禁用插件时是否删除缓存头像和目录') );
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$form->addInput($delCache);
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return _t('请到插件配置里设置相应选项');
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}
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/**
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* 个人用户的配置面板
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*
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* @access public
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* @param Typecho_Widget_Helper_Form $form
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* @return void
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*/
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public static function personalConfig(Typecho_Widget_Helper_Form $form){}
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/**
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* 插件实现方法
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*
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* @param $size
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* @param $rating
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* @param $default
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* @param $comments
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*/
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public static function getGravatar($size, $rating, $default, $comments)
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{
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$imgUrl = self::getGravatarCache($comments->mail, $comments->request->isSecure(), $size, $rating, $default);
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echo '<img class="avatar" src="'.$imgUrl.' "alt="'.$comments->author.'" width="'.$size.'" height="'.$size.'" />';
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}
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/**
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* 外部调用方法
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*
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* @param $mail
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* @param bool $isSecure
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* @param int $size
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* @param string $rating
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* @param string $default
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* @return string
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* @throws exception
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*/
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public static function getGravatarCache($mail, $isSecure = false, $size = 32, $rating = 'G', $default = 'mm')
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{
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$option = Typecho_Widget::widget('Widget_Options')->plugin('GravatarCache');
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$siteUrl = Helper::options()->siteUrl;
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$dir = __TYPECHO_ROOT_DIR__ . DIRECTORY_SEPARATOR;
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$referer = "http://www.gravatar.com";
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$path = $option->dir;
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$path = substr($path, 0, 1) == '/' ? substr($path, 1) : $path;
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$path = substr($path, -1, 1) != '/' ? $path.'/' : $path;
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$file = $dir.$path.'default.jpg';
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$default = empty($default) ? 'mm' : $default;
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$default = $default == 'mm' ? $default : urlencode($default);
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if(!self::mkdirs(dirname($file))){
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throw new exception('GravatarCache 目录创建失败，请检查指定的根目录是否可写' );
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}
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/** 如果默认的 default.jpg不存在，则下载 gravatar 默认的头像到本地*/
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if(!file_exists($file)){
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$avatar = 'http://www.gravatar.com/avatar/00000000000000000000000000000000?d='.$default.'&s='.$size.'&r='.$rating;
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if(!self::download($avatar, $referer, $file)) copy($avatar, $file);
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}
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$timeCache = $option->timeCache;
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$defaultMail = empty($mail) ? 'default' : md5( strtolower( $mail ) );
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$imgUrl = $siteUrl.$path.$defaultMail.'.jpg';
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$baseFile = $dir.$path.$defaultMail.'.jpg';
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if(!file_exists($baseFile) || (time() - filemtime($baseFile)) > $timeCache){
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$host = $isSecure ? 'https://secure.gravatar.com' : 'http://www.gravatar.com';
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$avatar = $host.'/avatar/'.$defaultMail.'?d='.$default.'&s='.$size.'&r='.$rating;
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if(!self::download($avatar, $referer, $baseFile)) copy($avatar, $baseFile);
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if(filesize($baseFile) == 911 && filesize($file) != 911) copy($file, $baseFile);
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}
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return $imgUrl;
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}
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/**
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* 生成多级目录
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*
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* @param $dir
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* @return bool
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*/
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public static function mkdirs($dir)
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{
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return is_dir($dir) or (self::mkdirs(dirname($dir)) and mkdir($dir, 0777));
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}
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/**
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* 禁用插件时同时删除缓存头像
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*
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* @access public
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* @return void
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*/
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public static function deleteFile()
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{
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$option = Typecho_Widget::widget('Widget_Options')->plugin('GravatarCache');
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$path = __TYPECHO_ROOT_DIR__ . DIRECTORY_SEPARATOR. $option->dir;
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if (substr($path,-1)!='/') {$path.='/';}
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if( $option->delCache == 'delY' ){
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foreach (glob( $path. '*.jpg') as $filename) {
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unlink($filename);
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}
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$sysDir = array( 'usr', 'uploads', 'themes', 'plugins' );
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$dirArray = explode("/", $path);
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array_pop($dirArray);
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$currentDir = array_pop($dirArray);
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if(!in_array( $currentDir, $sysDir)) { rmdir($path); }
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}
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}
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/**
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* 下载头像到本地
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*
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* @param $url
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* @param $referer
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* @param $imagePath
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* @return bool
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*/
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public static function download( $url, $referer, $imagePath )
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{
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$fpLocal = @fopen( $imagePath, 'w' );
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if( !$fpLocal ) {
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return false;
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}
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if( is_callable('curl_init') ) {
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$ch = curl_init();
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curl_setopt( $ch, CURLOPT_URL, $url );
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curl_setopt( $ch, CURLOPT_REFERER, $referer );
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curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, 10 );
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curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1 );
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curl_setopt( $ch, CURLOPT_HEADER, 0 );
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curl_setopt( $ch, CURLOPT_FILE, $fpLocal );
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if( !curl_exec($ch) ) {
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fclose( $fpLocal );
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curl_close( $ch );
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return false;
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}
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curl_close( $ch );
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}else {
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$opts = array(
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'http' => array(
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'method' => "GET",
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'header' => "Referer: $referer\r\n"
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)
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);
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$context = stream_context_create( $opts );
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$fpRemote = @fopen( $url, 'r', false, $context );
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if( !$fpRemote ) {
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fclose( $fpLocal );
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return false;
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}
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while( !feof( $fpRemote ) ) {
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fwrite( $fpLocal, fread($fpRemote, 8192) );
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}
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fclose( $fpRemote );
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}
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fclose( $fpLocal );
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return true;
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}
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}

‎README.md

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Gravatar 头像缓存插件 For Typecho
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=============
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由于国内访问 Gravatar 头像经常抽筋，此插件将会自动下载用户的头像到本地。
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### 使用说明
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- 下载插件
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- 将插件上传到 `/usr/plugins/` 这个目录下
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- 登陆后台，在“控制台”下拉菜单中进入“插件管理”
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- 启用插件即可
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###升级日志
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####2.0.2 at 2012-04-07
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- 修复初次激活插件，初次调用 getGravatarCache() 不会自动创建缓存文件夹的BUG
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- getGravatarCache() 增加第五个参数 $default
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- getGravatarCache($mail, $isSecure = false, $size = 32, $rating = 'G', $default = 'mm')
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- $mail -> 邮件地址；
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- $isSecure -> 是否使用 https 安全协议，默认 false；
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- $size -> 头像大小，这个只用于当评论头像不存在时重新获取头像时的大小，若头像已存在则无效，默认 32
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- $rating -> 头像等级，这个只用于当评论头像不存在时重新获取头像时的等级，若头像已存在则无效，默认 G
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- $default -> 默认头像 地址，默认值 为 mm（此值对应 gravatar官方比较美观的默认头像）
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- 整理简化代码，提高可读性
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####1.2.1 at 2012-04-06
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- 修复由于没有声明方法类型 为 静态类型 而导致插件初次使用时 出现错误警告的BUG （download 方法）
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- 删除一些无用的代码行
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####1.2.0 at 2011-04-14
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- 修复程序逻辑BUG
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- 修复域名后面多出一个斜杠的BUG
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- 优化了代码效率
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